Homework #2
- Page ID
- 42481
Due on Tuesday, Jan 26, 2016.
Q0T
Arrange the following types of intermolecular attractions in the increasing order of strength.
- Dipole-Dipole
- Ion-Ion
- Hydrogen bond
- London dispersion forces (for relatively small molecules such as water and propane)
Q12E
If the intermolecular forces of attraction is strong, which of the following statement(s) are true:
- Viscosity is high.
- Surface tension is low.
- Boiling point is high.
- Vapor Pressure is low.
- Melting point is low.
Q1B
For each of the following substances, (a) identify whether the compound is ionic or molecular, (b) draw the Lewis structure, (c) identify the molecular geometry(e.g. tetrahedral) around the underlined atom (if any), and (d) identify the predominant type of intermolecular forces:
- MgO
- CO2
- CH2O
- (CH3)3N
- CH3-NH2
Q4T
Arrange the liquid represendted by the following in the order of increasing normal boiling point.
- KBr
- CH3CH2CH2CH2CH3
- CH4
- CH3CH2CH2CH2OH
- C(CH3)4
Q15T
Rank the following in order of increasing viscosity at room temperature.
- H2NCH2CH2CH2NH2
- CH3CH2CH2CH2CH3
- CH3CH2CH2CH2NH2
Q39T
n-Hexane has a normal boiling point of 341.9 K and the enthalpy of vaporization (\(\Delta H_{\rm vap}=31.0 \rm kJ/mol\)). At what temperature n-Hexane boil under a pressure of 600 mmHg.